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6. Approximately what percentage of carbon dioxide is carried as bicarbonate in the red blood cell?
7. Which statement is correct about the lungs?
- The right lung has 4 lobes, the left lung has 3 lobes
- The right lung has 2 lobes, the left lung has 3 lobes
- The right lung has 3 lobes, the left lung has 2 lobes
- The right lung has 2 lobes, the left lung has 2 lobes
- The right lung has 3 lobes, the left lung has 3 lobes
8. What is the equilibrium potential of K+? (in mv)
9. How many airway divisions are there from the trachea to the alveoli?
10. What is the name of the part of the eye with the sharpest vision?
- Retina
- Optic disk
- Fovea
- Macula
- Sclera
11. What's the name of the enzyme which endothelial cells of alveolar capillaries release?
- ADE
- Capillarase
- ACE
- AGE
- Angoase
12. Below what concentration of PO2 in oxygenated blood do peripheral chemoreceptors switch on?
- 20 mmHg
- 60 mmHg
- 50 mmHg
- 40 mmHg
- 70 mmHg
13. Which part of the eye attaches the lens to the ciliary muscle?
- Zonules
- Iris
- Sclera
- Canal of schlemm
- Cornea
14. Which blood vessel carries oxygenated blood away from the lungs?
- Vena Cava
- Arterioles
- Pulmonary artery
- Pulmonary vein
- Aorta
15. Which part of the ECG is due to the ventricles contracting?
- T wave
- QT interval
- ST segment
- P wave
- QRS complex
16. If atmospheric pressure is 760 mmHg, what would the intra-alveolar pressure have to be for inhalation to occur? (in mmHg)
17. What is the correct composition of the extracellular fluid?
- Low [K+] and [Na+], high [Cl-]
- Low [K+], high [Na+] and [Cl-]
- High [K+], Low [Na+] and [Cl-]
- Low [Na+], high [Cl-] and [K+]
- Low [Cl-), high [K+] and [Na+]
18. Which agent is not used as a vasodilator?
- Ca channel blockers
- Adenosine
- Nitroglycerin
- Nitrates
- Beta blockers
19. What do the alpha cells of the pancreas release in response to a low blood glucose level?
- Glycogen
- Glucagon
- Glucose
- Insulin
- Adrenaline
20. Approximately what percentage of carbon dioxide is carried in solution, in plasma?